Centrifugal separator



DLB. WESTON.

CENTRIFUGAL SEPARATOR.

APPLICATION FILED DEC. 1, 191 RENEWED JAN. 19.1916.

Patented Aug. 29, 1916.

2 SHEETS8HEET l.

D. B. WESTON.

CENTRIFUGAL SEPARATOR.

APPLICATION FILED DEC. 1. tan. RENEWED JAN. 19.1916.

latented Aug. 29, 1916.

2 SHEETS-SHEET 2.

DAVID B. WESTON, OF SHARON, MASSACHUSETTS.

CENTRIFUGAL SEPARATOR.

Specification of Letters Patent.

Application filed December'l, 1911, Serial No. 663,198. Renewed January 19, 1916. Serial No. 73,069.

To e ll whom it may concern:

Be it known that 1, DAVID B. WEs'roN,:a citizen of the United States, and resident of Sharon, Massachusetts, have invented certain new and useful Improvements in Centrifugal Separators, of which the following is a specification. v

This invention relates to centrifugal separators intended for use in extracting or separating the solid constituents containedv in a body of liquid.

In its essential features the invention comprises a circular separator or drum comprising two opposed conical end walls and having means for introducing the liquid to be treated at one end; and an outlet at the opposite end ports for the escape of solid matter being provided intermediate of the axis and the belt or zone of greatest circumference. Heretofore, it has been proposed to use for this purpose a double conical vessel with the ports for the solid matter arranged at the greatest circumference of the drump'but under high speed rotation diiiiculties arise in controlling the outlet ports on account of the very considerable pressure at the periphery. This has either necessitated the use of very small ports,

which are more likely to become clogged, or else the use of valves which are likely to become disturbed by reason of the great pressure to which they are subjected.

My present invention overcomes these difficulties in that it involves the location of the discharge outlets for the solid matter at points nearer the axis, that is to say, on a shorter radius so related to the zone of largest diameter that the solid matter accumulated in the latter zone is pressed obliquely toward the axis until it reaches the outlet ports, this action tending to greatly relieve the pressure, and therefore to simplify the problem of the proper operation or control of said ports. 7

In the accompanying drawings I have illustrated diiierent modes of embodying the principles of this invention.

Figure 1 is a central section showing a machine constructed in accordance with my invention; Fig. 2 is a similar view of a mod ified form having the overhead suspension;

' ing the interior of the drums; and 5 is To accelerate the rotation of the liquid contents, I provide four radial vanes or partitions Z) which are joined together at the central axis by means of angle bars I).

.These partitions or vanes b are held in place by means of cleats a the inside surface of tional cleats a being the same purpose on the inside face of the shield This drum is provided with hollow journals a a mounted in suitable bearings, the journal a being connected with a supply pipe a to supply the material to be treated to the lower end of the drum, while the journal 01 leads to the offtake pipe a for the purpose of conducting away the properly located on the section a, addisuitably located for Patented Aug. 29, 1916.

liquid constituent from which the solid matter has been separated.

The upper section a is provided with ports a, which may be provided with interchangeable or replaceable' screw threaded nipples a by which the size of the open" ings may be varied. These ports in most cases," are preferably closed by valves 0, which are actuated a sliding collar 0 under hand lever 0 by which the valves are op'er ated and controlled.

Under the inlet end and opposed to the inlet ports is arranged a transverse diaphragm or disk 0? which acts as a deflector to spread the entering liquid outwardly away from the axis of the drum. The drum is snr rounded by a casing or curb 6 into which the solid contents are ejected through the ports a".

The operation of the machine is as follows :The liquid entering into the pipe a and the hollow journal a passes outwardly around the edges of the deflector or spreader d and under the influence of centrifugal acby levers c" eng d the control off;

ice

tion flows toward the zone of greatest diameter; the solid constituents being heavier than the liquid tend to build upinside this zone of greatestdiameter, and when a sufficient amount has been accumulated begins to force its way through the hollow conical passage formed between the shield a and the section a toward the outlet ports a". The lighter liquid constituents must assume, as the machine fills upa position nearer the axis of the machine, and consequently flows out through the hollow journal 0. into the ofitake pipe, After the machine has been operated a suflicient length of time to ac cumulate a suflicient amount of .solid substance, the valves are opened and from that time onward the action is continuous, so long as the machine is kept in operation.

While I have described the drum as comprising upper and lower sections a a, it

will nevertheless be understood that the arrangement shown in Fig. ;1 will operate precisely the same way whether the axis of the machine be horizontal or vertical.

In Fig. 2, I have illustrated a somewhat simpler embodiment of my invention in which the drum 6 with its upper and lower conical sections 6 e is suspended from an overhead shaft f, in a well-known manner. In this case the upper section 6 has a relatively larger opening through whichpass not only the shaft but also a supply pipe 9 whose outlet end is carried down adjacent to the lower end of the separator drum. This machine is provided with radial vanes e to accelerate the rotation of the liquid constituents.

On the inside of the lower section are arranged a series of tubular conduits or pipes e which lead to the outlet ports 6 located intermediate of the central axis and the zone of greatest diameter. The outlet ports may be controlled by valves 0 operated by lever c engaged by-the sliding collar 0 which is moved by the hand lever 0 just as previously described. At this upper end the drum or receptacle has provided a deflector or discharge plate a over which the escaping liquid flows into the compartment h of the surrounding curb or casing h. These outlet tubes or conduits e* for conducting the solid matter from the zone of greatest diameter back nearer to the axis of the drum may be arranged externally as shown in Fig. 5. In this case the drum 6 is provided with outlet ports 6 nearer to its greatest diameter, and the outlet pipes e are securely fastened to the outside face, as shown in said Fig. 5.

In Fig. 3, I have shown how a drum similar to that shown in Fig. 2 may be supported by an underneath bearing, the liquid being su plied through a hollow journal at the bottom andfiowing out at the top as in the case of the construction shown in Fig. 2.

In this case the drum 6 with its upper and lower conical sections c e is provided with a conical shield at covering the outlet ports and forming an annular conical passage between the inside wall of section 6 and the shield m in order to guide the solid material from the periphery obliquely toward the axis in order to allow it to escape through the outlet ports 6 The deflectord similar.

built up inside that zone until suflicient has accumulated to force its way through the passage leading to the outlet ports, the lighter liquid constituents accumulate nearer the center until it begins to flow out through the liquid outlet into the compartment 72; into which it is delivered over the plate 6 and from which it passes into suitable offtake.

What I claim is:

1. A centrifugal separator embracing a rotary receptacle or drum comprising two substantial conical members joined together with their larger diameters in juxtaposition, means for introducing into one end of said drum the liquid to be treated; a deflector for spreading the liquid toward the circumferen'ce the opposite end of the drum being provided with outlet ports for the escape of solid matter, said ports being located in the conical wall intermediate of the axis and the periphery of the drum, substantially as described.

A centrifugal separator embracing in its construction a separator drum comprising opposed conical walls forming a chamber converging in opposite directions to a. common central axis, means for introducing the material to be treated at one end of the drum, outlet ports for the discharge of solid constituents arranged in one conical end wall, in a plane of substantially smaller diameter than the peripheral zone of the drum, and guides secured to the interior face of the conical wall for guiding the solid matter from the peripheral zone to said discharge ports, substantially as described.

3. A centrifugal separator embracing in its construction a rotary separator drum having opposed conical end walls, means for introducing the material to be treated at one'apex of the drum, vanes for accelerating the rotation of the liquid so as to press the solid constituents against the inside of the peripheral portion of the drum, means for conducting the solid matter from said peripheral portion obliquely toward the axis into communication with discharge outlets located intermediate of the axis and the periphery of the drum, substantially as described.

its construction a separator drum having opposed conical end walls, means for introducing the liquid to be treated at one end of the drum, outlet ports for the discharge of solid constituents arranged in the conical wall of the drum intermediate ofthe axis and the periphery of the drum, means'for guiding the material from the peripheral portion of-the drum inwardly toward said discharge outlets, and a centrally arranged outlet port for the discharge of the liquid from the drum,

substantially as described. e

5. A centrifugal separator embracing its construction a drum having opposed conical end Walls, means for introducing the liquid to be treated at one end of said drum,

an outlet port central-1y arranged in the op-- posite end of said drum, said drum being provided with discharge ports in one coniof the drum than is the peripheral portion of saiddrum, means for guiding the solid for controlling the discharge ofmaterial v {through said -ports," substantially as de- 4. A centrifugal separator embracing in scribed.

' cal end wall, substantially nearer. the axis I so 6.- A centrifugal separator embracing a i" solid matter, a conical shield arranged in- I having opposed conical end .walls, a a

side said end Wall to form an annular conical passa e leading from the peripheral portion 0 the drum to said outlet ports,'and

I radial vanes for accelerating the rotation of the liquid .With the drum, said drum being provided with centrally. arranged discharge outlets for the liquid, substantially' as'de scribed.

G. A. ROCKWELL, GEO. NQGoDDAm).

In witnesswhereof, Ihave subscribed the abovespecification. i r v j 1 DAVIDB. WESTON. Inthepresence' of- 

